Spool Stage 3 Low Pressure Fuel Pump | E550/CLS550/S550 [M278] mercedes The FX-170 is the ultimate

The FX-170 is the ultimate solution for unleashing the full potential of your M276 engine

Inadequate low-pressure fueling can cause damage to the pump piston and bore as they are lubricated by controlled leakage of fuel

The added flow will let you run much higher ethanol concentrations and also allow fueling for bigger turbos

The FX-200 is an upgraded high-pressure fuel pump

and the second activates during boost onset for seamless power delivery

Spool Stage 3 Low Pressure Fuel Pump | E550/CLS550/S550 [M278] mercedes The FX-170 is the ultimateSpool Performance is proud to present the production version of our Stage 3 LPFP (Low Pressure Fuel System) for the Mercedes AMG M278 platform. With the use of high pressure pumps now being able to support DI fueling, we have found the low pressure electric fuel pumps that deliver fuel from the tank to the high pressure pumps to be a bottleneck while chasing high horsepower, especially on E85 fuel. The upgraded stage 3 low pressure pump kits are a